<?php

$this->startSetup();

$installer = $this;
$installer->installEntities();
$installer->getConnection()->addColumn($installer->getTable('sales/invoice'), 'sent_to_greendizer', 'boolean');
$installer->addAttribute('invoice', 'sent_to_greendizer', array('type' => 'boolean', 'default' => 0, 'comment' => 'Sent to Greendizer'));

$this->endSetup();

?>
